Psychologist | Clinical Psychology

Dr. Mark Lawrence Dayboch, PSY.D.

119 Fifty Acre Rd S, Smithtown, New York, 11787-2034

About Dr. Mark Lawrence Dayboch

Dr. Mark Lawrence Dayboch is a psychologist based in Smithtown, New York who is specialized in Clinical Psychology. Active license number of Dr. Mark Lawrence Dayboch is 009516-1 for Clinical Psychology in New York. His current practice location is 119 Fifty Acre Rd S, Smithtown. Patients can contact him at 631-979-9294. Dr. Mark Lawrence Dayboch, PSY.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1023136231.

Dr. Mark Lawrence Dayboch is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Dr. Mark Lawrence Dayboch's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Dr. Mark Lawrence Dayboch
Specialization Clinical Psychology
Credentials PSY.D.
Gender Male
Practice Address: 119 Fifty Acre Rd S,
Smithtown, NY - 11787-2034

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1023136231
NPI Enumeration Date: 26 Mar, 2007
NPI Last Update On: 08 Jul, 2007

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for Dr. Mark Lawrence Dayboch are as mentioned below.

License NumberSpecializationStateStatus
009516-1Clinical Psychology New YorkPrimary

Other Medical Identifiers

Other professional identifiers associated with Dr. Mark Lawrence Dayboch such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
02012224MedicaidNew York

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Dr. Mark Lawrence Dayboch
119 Fifty Acre Rd S,
Smithtown, NY - 11787-2034
Phone: 631-979-9294

Book an Appointment with Dr. Mark Lawrence Dayboch

To schedule an appointment, contact Dr. Mark Lawrence Dayboch at 119 Fifty Acre Rd S, Smithtown, New York or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Mark Lawrence Dayboch:

Dr. Mark Lawrence Dayboch is a psychologist specializing in Clinical Psychology. He is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, Dr. Mark Lawrence Dayboch is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

Dr. Mark Lawrence Dayboch practices at 119 Fifty Acre Rd S, Smithtown, New York, 11787-2034.

To schedule an appointment with Dr. Mark Lawrence Dayboch, please contact the office at 631-979-9294.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.